Comments on: Water-catching device wins Arup competition

By: Prof. Z viZion, deZign

Prof. Z viZion, deZign — Sun, 21 Jun 2009 09:03:10 +0000

Access to clean water is N° 1 human priority…need to dvp + test it asap
Yann Artus Bertrand will love this concept…you know why…

By: Philip Jones

Philip Jones — Wed, 21 Nov 2007 20:31:17 +0000

A recent technical paper which explains the more important practical requirements (non-technicals can skip the equations) and describes a special foil which is available is: Modeling and testing of a dew collection system, Desalination vol. 180(2005)47-51 by P. Gandhidasan and H.I. Abualhamayel (Dhahran, Saudi Arabia) at http://www.desline.com/proceedings/180.shtml. Dew collection is not a new idea, and while it is good to give it some publicity, it is a pity that previous knowledge was not used to make a more informed design. For example, you wouldn’t put these near trees as that would inhibit the radiative cooling on which the process depends, and the estimated “minimum” yield of 48 L per unit is very optimistic except under the most favourable conditions. Generally, the procedure is unreliable and certainly cannot be claimed to provide useful quantities of domestic water “in almost any climate”. A quick internet search will reveal a lot of information on this topic. Dew may be a significant micro water source for some agricultural industries where small albeit intermittant quantities of dew may help a crop survive periods with no rain. See http://www.harialanzarote.com/stone_mulching.htm

By: Seyoum

Seyoum — Sun, 04 Nov 2007 08:39:04 +0000

We are an Ethiopian business company that are trying to get hold of such a highly developed technic. But we are having problems in locating which companies that are the providers. Can you help us in providing some link adress’. I’m on a visit in Sweden.

Regards
S.

By: CHARLES MORENO

CHARLES MORENO — Tue, 09 Oct 2007 21:11:59 +0000

THE ABOVE IS MY E- MAIL I AM A INSURANCE BROKER IN BUSINESS
THE PAST 16 YEARS & WOULD LIKE MORE INFO ON YOUR PROUDCT
DO YOU HAVE DISTRIBUTIORS OR SALES AREAS PLEASE GET BACK
WITH
ME I BELIVE IT HAS A GREAT FUTURE

By: Richard Criddle

Richard Criddle — Sun, 02 Sep 2007 14:31:34 +0000

We are working with villagers in remote, near coastal areas of Peru. They have virtually no rain at these sites and water runoff from snowmelt is badly contaminated by the time it reaches these villages. Humidity is high and diurnal temperature fluctuations are significant in these areas. Thus it appears that these would be perfect sites for the inverted pyramid water extraction device.
However, I am having difficulty in locating technical information on the best materials and geometry for construction of the device. Is there a source that you can recommend for getting these details?
Thanks, Richard Criddle